Trane AFDH, Installation Manual

Page: 49 / 68

AFDH-SVN01A-EN 49
Installation
Install shorting buss bars
Note: Shorting buss bars must be installed since the AFDH is a three-lead device while the starter
was a six-lead device. The wires must be connected (shorted) at both ends (at the AFDH and
at the motor terminals) to ensure that there is no difference in potential between the two
paired leads caused by different wire lengths. Some existing starters may have this done
already.
1. Remove the motor terminal lug from all six terminals on the compressor motor terminal board.
2. Install the three buss bars provided, one each between the following motor terminal pairs
a. T1 - T6
b. T2 - T4
c. T3 - T5
3. Reinstall all of the motor terminal lugs.
Figure 25. Buss bar installation on compressor motor terminal board
1. Compressor motor
terminal board
2. Remove motor terminal
lugs (from all 6 terminals)
3. Install shorting buss bars
across the motor terminal
pairs as shown
4. Motor terminal lugs
reinstalled